Lateral-motion truck-bolster.



i. J. SULLIVAN.

LATERAL MOTION TRUCK HOLSTER,

APPLICATION FILED DEC. 22,1915.

A UUR/MVS :WT/0% L m.

Patented May 1, 1917.

JEREMIAH J'. SULLIVAN, OF NASHVILLE, TENNESSEE.

LATERAL-IVIOTION TRUCK-BOLSTER.

Specification. of Letters Patent.

Patented May 1, 191'?.

Original application filed August 22, 1916, Serial No. 116,275. Dividedand this application filed December 22, 1916. Serial No. 138,401.

To aZZ whom t may concern:

Be it known that l, JEREMIAH J. SULLI- VAN, a citizen of the UnitedStates, and a resident of Nashville. in the county of Davidson and Stateof Tennessee, have invented a new and lmproved Lateral-MotionTruck-Bolster, of which the following is a full. true, and eXactdescription.

My invention has for its object to provide a lateral motion truckbolster which is simple in construction, and which while permitting alimited lateral play of a car or tender, serves not only to retain thecenterplate normally at the center line, but also tends to increase theresistance to an abnormal movement of the car or tender.

Additional objects of the invention will appear in the followingspecification, in which the preferred form of the invention isdisclosed.

ln the drawings similar reference characters denote similar parts in allthe views, in which- Figure 1 is a transverse sectional viewillustrating my bolster;

Fig'. 2 is a fragmentary plan view of Fig. 1 with the center-plateremoved; and

Fig. 3 is a transverse sectional view of Fia. 1.

By referring' to the drawings. it will be seen that a bolster 5 ismounted in the usual manner. and is provided at its top with a recess 6.the bottom of the recess having four longitudinally disposed channels 8.the side walls ot each of these channels diverging upwardly so thatrollers 9 which are disposed longitudinally in the recess 6 will benormally disposed each at the center of a channel 8. The rollers 9 rollto these centers under the action. of ,(Iravity. Disposed in the recess6. there is a center-plate 1() on which the body bolster ot the car ortender is mounted. the body holster being` indicated in dotted lines at11.

The bottom oi' the center-plate 11 is provided with a plurality oflongitudinally disposed channels 13 the side walls 14 of which divergedownwardly above the upwardly divergfing' side walls of the channels 8.The rollers 9 are normally disposed not only at the centers of thechannels 8. but also at the centers of the channels 13, as shown in thedrawings.

1t will be seen that the width of the channels 8 is substantially thesame as the width of the channels 13, so that the rollers 9 may haveconsiderable freedom of movement not only'with reference to thecenter-plate 10, but also with reference to the bolster 5. The bolster 5at the bottom of the recess 6, at the outer sides of the outer channels8, is inclined outwardly and upwardly, as shown at 15, the inclinedportions 15 of the bolster 5 extending substantially to positions at thesame level as the bottom of the center-plate 10. These inclined portions15, which are steeper than the sides of the channels 8, are provided tooffer greater resistance to the upward movement of the rollers 9 whenthere is a tendency to an abnormal lateral movement of the car ortender.

The channels 8 and 13 are shaped to keep the rollers spaced from eachother, and to return the center-plate 10 to normal position aftermovement. lt is also possible to make a general inspection at the sidesof the center-plate 10.

Havingl thus described my invention.l l claim as new and desire tosecure by Letters Patent:

1. ln an article ot the class described, a bolster having a recess. thebolster forming' sides for the recess. there being a plurality oilongitudinally extending channels in the bolster at the bottom oi therecess. the sides of each channel divergingr upwardly. a Center-platedisposed in the recess and having' its sides normally spaced from thesaid sides of the recess. there beine' a plurality of longitudinallyextending channels in the bottomof the center-plate. the sides of thelast mentioned channels divergino downwardly. and al plurality otrollers disposed in the channels between the center-plate and thebolster. the bolster at the bottom of the recess being' inclinedoutwardly and upwardly from the outer sides of the outer channels toofier greater resistance under unusual conditions.

2. ln an article of the class described. a bolster having a recess, thebolster forming sides for the recess. there being' a plurality oflongitudinally extending; channels in the bolster at the bottom of therecess. the sides of each channel diverainn upwardly. a center-platedisposed in the recess and having its sides normally spaced from thesaid sides of the recess, there being a plurality of lonstantially thesame width as ltbe first mengitudinally extending Channels in the bottomof the center-plate, the sides of the last mentioned channels divergingdownwardly, the last mentioned channels being of subpla-te and thebolster, the bolster at the bottoni of the recess being inclinedoutwardly and'upwardly from the outer sides of the outer channels to oergreater resistance under unusual conditions.

JEREMIAH J. SULLIVAN.

tioned channels, and a plurality of rollers disposed in the channelsbetween the center- Cpes of this patent may be obtained for five centseach, by addressing the Commissioner of Patents, Washington, D. C.

